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Zero-pole system interface functions

zp2sys (zer pol, k, tsam, inname, outname) Function File
Create system data structure from zero-pole data.

Inputs

zer
Vector of system zeros.
pol
Vector of system poles.
k
Scalar leading coefficient.
tsam
Sampling period; default: 0 (continuous system).
inname
outname
Input/output signal names (lists of strings).

Output

sys
System data structure.

Example 

          octave:1> sys=zp2sys([1 -1][-2 -2 0],1);
          octave:2> sysout(sys)
          Input(s)
                  1: u_1
          Output(s):
                  1: y_1
          zero-pole form:
          1 (s - 1) (s + 1)
          -----------------
          s (s + 2) (s + 2)

[zer pol, k, tsam, inname, outname] = sys2zp (sys) Function File
Extract zero/pole/leading coefficient information from a system data structure.

See zp for parameter descriptions.

Example 

          octave:1> sys=ss([1 -2; -1.1-2.1],[0;1],[1 1]);
          octave:2> [zerpol,k] = sys2zp(sys)
          zer = 3.0000
          pol =
            -2.6953
             1.5953
          k = 1